/*
 * Copyright (C) 2021 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.bytedance.scenedemo.architecture_patterns.mvvm;

import com.bytedance.scene.Scene;
import com.bytedance.scene.ui.SceneAbility;
import ohos.utils.PacMap;

import static com.bytedance.scenedemo.architecture_patterns.mvvm.ViewModelSceneSamples.KEY;

/**
 * ViewModelSceneAbility.
 *
 * @since 2021-06-17
 */
public class ViewModelSceneAbility extends SceneAbility {
    private static PacMap pacMap;

    @Override
    protected Class<? extends Scene> getHomeSceneClass() {
        return ViewModelSceneSamples.class;
    }

    @Override
    protected boolean supportRestore() {
        return true;
    }

    @Override
    public void onSaveAbilityState(PacMap outState) {
        super.onSaveAbilityState(outState);
        outState.putIntValue(KEY, ViewModelSceneSamples.getNum());
        setPacMap(outState);
    }

    @Override
    public void onRestoreAbilityState(PacMap inState) {
        super.onRestoreAbilityState(inState);
        setPacMap(inState);
    }

    public static PacMap getPacMap() {
        return pacMap;
    }

    private void setPacMap(PacMap pacMap) {
        ViewModelSceneAbility.pacMap = pacMap;
    }

    @Override
    public void onBackPressed() {
        if (null != pacMap) {
            onSaveAbilityState(pacMap);
        }
        super.onBackPressed();
    }
}
